From 7e96b45ea0c51ca5589640018172a91a35596148 Mon Sep 17 00:00:00 2001
From: Leonid Logvinov <logvinov.leon@gmail.com>
Date: Fri, 26 May 2017 18:25:17 +0200
Subject: Make zero address regex stricter

---
 src/ts/web3_wrapper.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/ts/web3_wrapper.ts b/src/ts/web3_wrapper.ts
index 97d04db8c..3b460e4da 100644
--- a/src/ts/web3_wrapper.ts
+++ b/src/ts/web3_wrapper.ts
@@ -50,7 +50,7 @@ export class Web3Wrapper {
     public async doesContractExistAtAddressAsync(address: string): Promise<boolean> {
         const code = await promisify(this.web3.eth.getCode)(address);
         // Regex matches 0x0, 0x00, 0x in order to accomodate poorly implemented clients
-        const zeroHexAddressRegex = /^0x0*$/i;
+        const zeroHexAddressRegex = /^0x0\{0,40\}$/i;
         const didFindCode = _.isNull(code.match(zeroHexAddressRegex));
         return didFindCode;
     }
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